Vat dyestuff preparations



Patented Mar. 9, 1937 UNITED STATES PATENT OFFICE VAT DYESTUFFPREPARATIONS Joseph Nuesslein and Gerhard Balle, Frankforton-the-Main,Germany, asslgnors to General Aniline Works, Inc., New York, N.

poration of Delaware Y., a cor- No Drawing. Application December 18,1934, Serial No. 758,140. In Germany December 21,

6 Claims.

wherein R means hydrogen, alkyl, aryl or aralkyl and Z stands for theradical of a monosaccharide.

As substances of this general formula there may be mentioned, forinstance: glucamine,

methylglucamine, butylglucamine, phenylglucamine, benzylglucamine,oxethylglucamine, ethylenediglucamine, diethylglucamine,dioxethylglucamine, butylxylamine, methylfructamine. These substancesmay be prepared for instance, by catalytically reducing sugars in thepresence of ammonia or aliphatic or aromatic or mixed aliphatic-aromaticamines which may also be substituted. These substances may directly bemixed with the dyestuifs or may be added to the printing pastes togetherwith the admixtures, usually applied in printing processes, such as, forinstance, glycerol, thiodiglycol and thickening agents.

The vat-dyestufl preparations may be used in direct printing as well asin discharge and resist printing processes.

The following examples serve to illustrate the invention, but they arenot intended tolimit it thereto, the parts are by weight:

(1) 75 parts of the dyestufi No. 1279, Schulz, Farbstofitabellen, 7thedit. (double paste, fine) are intimately mixed with 80 parts ofglycerol, 110 parts of water, 500 parts of wheat-starchtragacanththickening, 120 parts of potassium carbonate, 75 parts of sodiumformaldehydesulfoxylate and 40 parts of butylglucamine.

The printing color is printed in the usual manner on vegetable or animalfibers, such as natural silk. The material is then dried, steamed in asuitable manner, rinsed with or without addition of an oxydizing agent,soaped while hot,

rinsed and dried. A print is obtained which has a deeper shade than thatof the print prepared without addition of butylglucamine.

(2) 100 parts of the dyestufi No. 1269, Schulz, Farbstofitabellen, 7thedit, (in the form of a finely concentrated paste) are intimately mixedwith 80 parts of glycerol, 45 parts of water, 500

parts of wheat-.starch-tragacanth thickening,

.120 parts of potassium carbonate, parts of sodiumformaldehyde-sulfoxylate and parts of phenylglucamine.

The material is printed and after-treated as described in-Example 1. Thefixation occurs more quickly and the unreduced print is essentially morestable than that prepared without addition of phenylglucamine.

(3) 75 parts of the dyestuff No. 1228, Schulz, Farbstofltabellen, 7thedit. (double paste, fine) are intimately mixed. with 60 parts ofglycerol, parts of water, 500 parts of wheat-starchtragacanththickening, parts of potassium carbonate, '75 parts of sodiumformaldehydesulfoxylate and 40 parts of glucamine.

The material is printed and after-treated as stuff and a compound of thefollowing general 7 formula wherein R stands for hydrogen, alkyl, arylor aralkyl and Z stands for the radical of a compound of the groupconsisting of pentoses and hexoses.

2. Dyestufi preparations containing a vat-dyestufi and a compound of thefollowing general formula:

aralkyl.

3. Dyestufl preparations containing a vat-dye- 2 9,078,116 stall and a.compound oi the following general wherein R. stands ior alkyl, aryl oraralkyl.

formula: 4. The dyestufl preparation containing a vatdyeatufl andglucamine.

5. The dyestufl preparation containing a vat- 5 dyestui'! andphenylglucamine. 6

i 6. The dyestufi preparation containing a. vat- HOH dyestufi andbutylglucamine. on A JOSEPH NUESSLEIN.

' GERHARD BALLE. 1301: lo

JIHaOH

